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Reducing Car Consumption by Means of a Closed-loop Drag Control

Authors:
Camila Chovet
Baptiste Plumjeaeu
Sebastien Delprat
Marc Lippert
Laurent Keirsbulck
Maxime Feingesicht
Andrey Polyakov
Jean-Pierre Richard
Franck Kerhervé

Keywords: Flow Control; Vehicle; Sliding Mode Control; Drag reduction.

Abstract:
We present a closed-loop separation control experiment on a real car (Renault Twingo GT) using a robust model-based strategy known as Sliding Mode Control (SMC) and whose goal is to decrease the gas consumption through the reduction of the drag force. The study also investigates the feasibility of this control and estimation approach for an industrial framework. A movable spoiler, equipped with slotted air jets, is placed on the top trailing edge of the car in order to actuate the air flow on the rear side of the vehicle. In order to estimate the drag force, the vehicle is instrumented with dSPACE and DEWESoft equipment, which are able to do synchronized measurements in real-time. Concerning the control algorithm, Sliding Mode Control was designed on the basis of a non-linear delayed input-output model, which was recently defined for another flow control application and has shown a good ability for robustness and disturbance rejection.

Pages: 25 to 29

Copyright: Copyright (c) IARIA, 2018

Publication date: June 24, 2018

Published in: conference

ISSN: 2327-2058

ISBN: 978-1-61208-643-9

Location: Venice, Italy

Dates: from June 24, 2018 to June 28, 2018